15 Things You Probably Didn’t Know About Blood

Does menstrual blood really attract bears? Why does blood look blue in your veins? And why were the first blood transfusions performed with animals? Here are 15 facts, historical and biological, you probably didn’t know about blood.

Source: 15 Things You Probably Didn’t Know About Blood

The reason horseshoe crab blood is blue is the binding agent is copper, not iron. This species is thought to be the most “ancient”, having seen Jurassic dinosaurs come and go.

Are You Eating Plastic for Dinner?

Direct link to the National Geographic youtube video (4:39 minutes).

Not the most uplifting video, but they do mention advancements in clean up and suggest ways to change your purchasing decisions to minimize the damage.  The floating mass of plastic waste in the Great Pacific has been reported on for years…